CN205714761U - A kind of sealing structure of double-screw compressor - Google Patents
A kind of sealing structure of double-screw compressor Download PDFInfo
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- CN205714761U CN205714761U CN201620552939.3U CN201620552939U CN205714761U CN 205714761 U CN205714761 U CN 205714761U CN 201620552939 U CN201620552939 U CN 201620552939U CN 205714761 U CN205714761 U CN 205714761U
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- external part
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- sealing
- double
- screw compressor
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Abstract
This utility model provides the sealing structure of a kind of double-screw compressor, belongs to Compressor Technology field.It solve the problem how improving the sealing property that double-screw compressor seals structure.Double-screw compressor includes housing, male rotor, air entry, air vent and fuel injection chamber, it is external part that male rotor stretches out one end of housing, bearing is set between external part and housing, bearing (ball) cover it is arranged with on external part, this sealing structure includes the projecting ring section being positioned on bearing (ball) cover inwall, there is on external part the shaft shoulder one, projecting ring section be positioned at the shaft shoulder one outside and with external part matched in clearance, the annular seal space communicated with fuel injection chamber it is formed with between projecting ring section with bearing, sealing ring one it is provided with in annular seal space, the side of sealing ring one is resisted against on the shaft shoulder one, the opposite side of sealing ring one is resisted against on projecting ring section.This sealing structure sealing ring when male rotor rotates can separate with bearing (ball) cover, it is possible to avoids sealing ring and bearing (ball) cover to relatively rotate and abrasion occurs, thus improves sealing property.
Description
Technical field
This utility model belongs to Compressor Technology field, relates to the sealing structure of a kind of double-screw compressor.
Background technology
Screw compressor is the positive displacement compressor of a kind of high speed revolution, has that single-stage pressure ratio is big, efficiency is high, operating is flat
The advantage such as steady.The most conventional screw compressor is double-screw compressor, and double-screw compressor has housing and is arranged at shell
Intermesh for a pair of internal portion, the rotor of oppositely oriented spiral-shaped teeth, the protruding rotor of its flank of tooth is male rotor, and the flank of tooth is recessed
Under for female rotor.The housing of compressor is respectively arranged at two ends with air entry and air vent, along with rotor rotation fortune in housing
Dynamic, make swept volume constantly be changed by the engagement or disengagement of tooth, thus between every pair of teeth groove of periodic variation rotor
Volume, reaches the purpose of air-breathing, compression and aerofluxus.
Such as Chinese patent [application number 201410305579.2；Application publication number CN105275805A] disclose a kind of oil spout
Formula double-screw compressor, the screw rod chamber of double-screw compressor body is connected by the air vent of end cap with oil-gas separation chamber.Screw rod
Rotor in chamber is born radial force by two needle bearings, and an angular contact ball bearing bears axial force.The end in screw rod chamber, peace
Dress reduction box, opposite side has two end caps, near the sealing for screw rod chamber and the installation of bearing, the end cap in outside in screw rod chamber
For sealing oil circuit and deriving gas mixture.The middle and lower part of oil-gas separation chamber is provided with one piece of filter plate, is used for filtering oil gas and mixes
Compound.Be provided with an one-way exhaust valve and electromagnetic valve on the top of oil-gas separation chamber, air bleeding valve is used for discharging gas, electromagnetic valve
For controlling oil spout.
In the prior art, the sealing structure between rotor and the bearing (ball) cover of double-screw compressor is frequently with oil sealing and oil
Envelope axle sleeve fitted seal, but, in double-screw compressor work process, the oil that fuel injection chamber is ejected on bearing can be inhaled into
In low-pressure area, say, that during compressor operating, oil sealing is inoperative, and owing to being interference fit between oil sealing and bearing (ball) cover
Relation, in rotor rotation process, oil sealing easily relatively rotates with bearing (ball) cover and causes abrasion, and impact seals structure
Sealing property.
Summary of the invention
The purpose of this utility model is to there are the problems referred to above for existing technology, it is proposed that a kind of double-screw compressor
Sealing structure, this utility model solves the technical problem that it is how to improve double-screw compressor to seal the sealing property of structure.
The purpose of this utility model can be realized by following technical proposal: the sealing structure of a kind of double-screw compressor,
Described double-screw compressor includes having the housing of inner chamber, the male rotor being located on housing, air entry, air vent and oil spout
Chamber, it is external part that described male rotor stretches out one end of housing, arranges bearing, on described external part between described external part and housing
It is arranged with bearing (ball) cover, it is characterised in that described sealing structure include being positioned on bearing (ball) cover inwall inwardly projecting and in ring
The projecting ring section of shape, described external part has the shaft shoulder one, and described projecting ring section is positioned at the outside of the shaft shoulder one and joins with external part gap
Close, be formed with the annular seal space communicated with fuel injection chamber between described projecting ring section and bearing, be provided with and external part in described annular seal space
Friction tight sealing ring one, the side of described sealing ring one is resisted against on the shaft shoulder one, and the opposite side of described sealing ring one is resisted against
On projecting ring section.
Being different from prior art, the operation principle of the sealing structure of this double-screw compressor is as follows: this sealing structure is passed through
The sealing of projecting ring section, sealing ring one and the shaft shoulder one coordinates, and makes annular seal space seal, when in fuel injection chamber with extraneous before compressor start
Oil be sprayed onto in annular seal space, oil can flow to bearing and housing cavity in sealed chamber, will not leak at structure from sealing；Work as male rotor
Starting to rotate, i.e. during compressor starts work, in compression process, the gas in air entry is inhaled into, at air entry
Interior intracavity can form low-pressure area, and the oil in annular seal space can be inhaled into low-pressure area, does not haves leakage；Meanwhile, extraneous gas
Also can be inhaled into low-pressure area by the sealed chamber of bearing (ball) cover, now sealing ring is near the side meeting of projecting ring section and bearing (ball) cover
Separate so that when male rotor rotates, sealing ring will not produce friction with bearing (ball) cover, thus avoids sealing ring to send out with bearing (ball) cover
Life relatively rotates and causes abrasion, improves the service life sealing structure, and then improves the sealing property sealing structure.
As preferentially, in the sealing structure of above-mentioned double-screw compressor, described external part has annular groove, institute
Stating annular groove between projecting ring section and the shaft shoulder one, described sealing ring one is embedded in annular groove.Recessed by design annular
Groove, is on the one hand that the installation facilitating sealing ring one positions, and is on the other hand the sealing surface being increased by annular groove and sealing structure
Long-pending, improve the sealing property sealing structure.
As preferentially, in the sealing structure of above-mentioned double-screw compressor, described projecting ring section has recessed shoulder, described in stretch
Go out end on also there is the shaft shoulder two, be formed with installation cavity between described recessed shoulder and the shaft shoulder two, described installation cavity built with external part
Friction tight sealing ring two.By arranging sealing ring two further, improve the sealing property sealing structure further.
In the sealing structure of above-mentioned double-screw compressor, in described housing, be provided with oil canal, described fuel injection chamber and
Annular seal space is connected by oil canal.Oil in fuel injection chamber is sprayed onto annular seal space through oil canal, then is entered inner chamber by annular seal space, right
Bearing and rotor are lubricated.
In the sealing structure of above-mentioned double-screw compressor, it is provided with between described bearing (ball) cover and external part and is covered with dust.If
Putting the effect being covered with dust is that the impurity such as dust preventing outside air enters annular seal space.
Compared with prior art, the sealing structure of this double-screw compressor has the advantage that this sealing structure turns at sun
When son rotates, sealing ring can separate with bearing (ball) cover, it is possible to avoids sealing ring and bearing (ball) cover to relatively rotate and mill occurs
Damage so that the service life sealing structure is improved, thus improve the sealing property sealing structure.
Accompanying drawing explanation
Fig. 1 is the structural representation in the present embodiment one.
Fig. 2 is the structural representation in the present embodiment two.
Fig. 3 is the structural representation in the present embodiment three.
In figure, 1, housing；2, male rotor；21, external part；21a, the shaft shoulder one；21b, the shaft shoulder two；22, annular groove；3, inhale
QI KOU；4, air vent；5, fuel injection chamber；6, bearing；7, bearing (ball) cover；71, projecting ring section；71a, recessed shoulder；8, annular seal space；9, sealing ring
One；10, installation cavity；11, sealing ring two；12, oil canal；13, it is covered with dust.
Detailed description of the invention
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but this utility model is not limited to these embodiments.
Embodiment one:
As it is shown in figure 1, in the present embodiment, double-screw compressor includes having the housing 1 of inner chamber, be located on housing 1
Male rotor 2, air entry 3, air vent 4 and fuel injection chamber 5, it is external part 21 that male rotor 2 stretches out one end of housing 1, external part 21 with
Bearing 6 is set between housing 1, external part 21 is arranged with bearing (ball) cover 7.It is provided with between bearing (ball) cover 7 and external part 21 and is covered with dust
13。
This sealing structure include being positioned on bearing (ball) cover 7 inwall inwardly projecting and projecting ring section 71 in the form of a ring, external part
There is on 21 the shaft shoulder one 21a, projecting ring section 71 be positioned at the shaft shoulder one 21a outside and with external part 21 matched in clearance, projecting ring section 71 with
Being formed with annular seal space 8 between bearing 6, be provided with oil canal 12 in housing 1, fuel injection chamber 5 is connected by oil canal 12 with annular seal space 8
Logical.Being provided with sealing ring one 9 friction tight with external part 21 in annular seal space 8, the side of sealing ring 1 is resisted against the shaft shoulder one 21a
On, the opposite side of sealing ring 1 is resisted against on projecting ring section 71.
Embodiment two:
Technical scheme in the present embodiment is essentially identical with the technical scheme in embodiment one, and difference is, as
Further preferably, as in figure 2 it is shown, in the present embodiment, external part 21 also has annular groove 22, annular groove 22 is positioned at bulge loop
Between portion 71 and the shaft shoulder one 21a, sealing ring 1 is embedded in annular groove 22.
Embodiment three:
Technical scheme in the present embodiment is essentially identical with the technical scheme in embodiment one, and difference is, as
Further preferably, as it is shown on figure 3, in the present embodiment, projecting ring section 71 also has recessed shoulder 71a, external part 21 also has the shaft shoulder
Two 21b, are formed with installation cavity 10 between recessed shoulder 71a and the shaft shoulder two 21b, installation cavity 10 is built with friction tight with external part 21 close
Seal 2 11.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although the most more employ housing 1, male rotor 2, external part 21, the shaft shoulder one 21a, the shaft shoulder two 21b, annular recessed
Groove 22, air entry 3, air vent 4, fuel injection chamber 5, bearing 6, bearing (ball) cover 7, projecting ring section 71, recessed shoulder 71a, annular seal space 8, sealing ring
One 9, installation cavity 10, sealing ring 2 11, oil canal 12, be covered with dust the terms such as 13, but is not precluded from using the probability of other term.
Use these terms to be only used to more easily and describe and explain essence of the present utility model；It is construed as any one
Additional restriction is all contrary with this utility model spirit.
Claims (5)
1. a sealing structure for double-screw compressor, described double-screw compressor includes having the housing (1) of inner chamber, be located in
Male rotor (2), air entry (3), air vent (4) and fuel injection chamber (5) on housing (1), described male rotor (2) stretches out housing (1)
One end be external part (21), bearing (6) is set between described external part (21) and housing (1), the upper set of described external part (21)
Be provided with bearing (ball) cover (7), it is characterised in that described sealing structure include being positioned on bearing (ball) cover (7) inwall inwardly projecting and
Projecting ring section (71) in the form of a ring, described external part (21) has the shaft shoulder one (21a), and described projecting ring section (71) is positioned at the shaft shoulder one
(21a) outside and with external part (21) matched in clearance, be formed and fuel injection chamber between described projecting ring section (71) and bearing (6)
(5) annular seal space (8) communicated, is provided with in described annular seal space (8) and external part (21) friction tight sealing ring one (9), described
The side of sealing ring one (9) is resisted against on the shaft shoulder one (21a), and the opposite side of described sealing ring one (9) is resisted against projecting ring section (71)
On.
The sealing structure of double-screw compressor the most according to claim 1, it is characterised in that the upper tool of described external part (21)
Annular groove (22), described annular groove (22) is had to be positioned between projecting ring section (71) and the shaft shoulder one (21a), described sealing ring one
(9) it is embedded in annular groove (22).
The sealing structure of double-screw compressor the most according to claim 1, it is characterised in that the upper tool of described projecting ring section (71)
There is recessed shoulder (71a), described external part (21) also has the shaft shoulder two (21b), between described recessed shoulder (71a) and the shaft shoulder two (21b)
Be formed with installation cavity (10), described installation cavity (10) built with external part (21) friction tight sealing ring two (11).
4. according to the sealing structure of the double-screw compressor described in claim 1 or 2 or 3, it is characterised in that described housing (1)
Inside it is provided with oil canal (12), described fuel injection chamber (5) and annular seal space (8) to be connected by oil canal (12).
5. according to the sealing structure of the double-screw compressor described in claim 1 or 2 or 3, it is characterised in that described bearing (ball) cover
(7) and it is provided with, between external part (21), be covered with dust (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552939.3U CN205714761U (en) | 2016-06-07 | 2016-06-07 | A kind of sealing structure of double-screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620552939.3U CN205714761U (en) | 2016-06-07 | 2016-06-07 | A kind of sealing structure of double-screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714761U true CN205714761U (en) | 2016-11-23 |
Family
ID=57301785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620552939.3U Expired - Fee Related CN205714761U (en) | 2016-06-07 | 2016-06-07 | A kind of sealing structure of double-screw compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714761U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829932A (en) * | 2017-11-30 | 2018-03-23 | 珠海格力电器股份有限公司 | Screw compressor, air conditioning equipment and volume efficiency adjusting method thereof |
| CN109162927A (en) * | 2018-08-28 | 2019-01-08 | 安徽省华欣能源装备科技有限公司 | A kind of supporting arrangement of helical-lobe compressor |
| CN109441814A (en) * | 2018-12-29 | 2019-03-08 | 无锡五洋赛德压缩机有限公司 | Novel screw compressor |
| CN113686548A (en) * | 2020-05-13 | 2021-11-23 | 格芯(美国)集成电路科技有限公司 | Wafer level testing of lasers attached to photonic chips |
| CN115559904A (en) * | 2022-10-18 | 2023-01-03 | 西安交通大学 | Variable-lead double-screw machine and axial liquid spraying active regulation and control method thereof |
-
2016
- 2016-06-07 CN CN201620552939.3U patent/CN205714761U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107829932A (en) * | 2017-11-30 | 2018-03-23 | 珠海格力电器股份有限公司 | Screw compressor, air conditioning equipment and volume efficiency adjusting method thereof |
| WO2019104811A1 (en) * | 2017-11-30 | 2019-06-06 | 格力电器（武汉）有限公司 | Screw compressor, air conditioning device, and volume efficiency adjusting method for screw compressor |
| CN107829932B (en) * | 2017-11-30 | 2019-12-31 | 珠海格力电器股份有限公司 | Screw compressor, air conditioning equipment and volume efficiency adjusting method thereof |
| CN109162927A (en) * | 2018-08-28 | 2019-01-08 | 安徽省华欣能源装备科技有限公司 | A kind of supporting arrangement of helical-lobe compressor |
| CN109441814A (en) * | 2018-12-29 | 2019-03-08 | 无锡五洋赛德压缩机有限公司 | Novel screw compressor |
| CN113686548A (en) * | 2020-05-13 | 2021-11-23 | 格芯(美国)集成电路科技有限公司 | Wafer level testing of lasers attached to photonic chips |
| CN115559904A (en) * | 2022-10-18 | 2023-01-03 | 西安交通大学 | Variable-lead double-screw machine and axial liquid spraying active regulation and control method thereof |
| CN115559904B (en) * | 2022-10-18 | 2023-12-19 | 西安交通大学 | Variable-lead double-screw machine and active adjusting and controlling method for axial liquid spraying of variable-lead double-screw machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180607 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |